Global Patent Index - EP 0941371 A4

EP 0941371 A4 2000-10-04 - METHOD FOR PROCESSING SUGAR BEETS TO PRODUCE A PURIFIED BEET JUICE PRODUCT

Title (en)

METHOD FOR PROCESSING SUGAR BEETS TO PRODUCE A PURIFIED BEET JUICE PRODUCT

Title (de)

VERFAHREN ZUR BEARBEITUNG VON ZUCKERRÜBEN ZUR HERSTELLUNG EINES REINEN RÜBENSAFTPRODUKTES

Title (fr)

PROCEDE DE TRAITEMENT DE BETTERAVES A SUCRE POUR PRODUIRE UN JUS DE BETTERAVE PURIFIE

Publication

EP 0941371 A4 (EN)

Application

EP 97920370 A

Priority

  • US 9706102 W
  • US 64570296 A

Abstract (en)

[origin: WO9743454A1] An efficient method for manufacturing a purified juice product from sugar beets. Untreated beet juice is initially prelimed using lime and CaCO3 to produce a prelimed juice product (70). Instead of subjecting the prelimed product to main liming and dual carbonation stages, the product is delivered to a porous filtration membrane (206) which allows sugar molecules to pass therethrough which prevents the passage of solid matter and dissolved impurities. Optimum results are achieved if the prelimed product flows across the membrane combined with CO2(g) in a single carbonation stage to remove dissolved lime. This step generates a purified juice product (256) which can be processed to manufacture pure crystalline sugar. The membrane retentate (252) can be combined with water and refiltered to collect residual sugar materials. The foregoing process uses less energy and raw materials (e.g., lime) compared with conventional methods.

IPC 1-7 (main, further and additional classification)

C13D 3/06; C13D 3/16

IPC 8 full level (invention and additional information)

B01D 61/14 (2006.01); B01D 61/16 (2006.01); C13B 20/00 (2011.01); C13B 20/02 (2011.01); C13B 20/04 (2011.01); C13B 20/12 (2011.01); C13B 20/16 (2011.01)

CPC (invention and additional information)

C13B 20/02 (2013.01); B01D 61/145 (2013.01); B01D 61/147 (2013.01); B01D 61/16 (2013.01); C13B 20/00 (2013.01); C13B 20/04 (2013.01); C13B 20/12 (2013.01); C13B 20/165 (2013.01); Y02P 40/44 (2015.11)

Citation (search report)

  • [A] US 2976189 A 19610321 - ALSTON PAUL W
  • [A] US 3113045 A 19631203 - ALSTON PAUL W
  • [A] US 4432806 A 19840221 - MADSEN RUD F [DK], et al
  • [A] US 5480490 A 19960102 - TOTH LASZLO [US], et al
  • [A] NIELSEN W K ET AL: "Prospects and possibilities in application of membrane filtration systems within the beet and cane sugar industry.", SUGAR TECHNOLOGY REVIEWS 1982 A/S DE DANSKE SUKKERFABRIKKER, DRIFTTEKNISK LAB., NAKSKOV, DENMARK, vol. 9, no. 1, pages 59 - 117, XP002143792
  • See also references of WO 9743454A1

Designated contracting state (EPC)

AT DE DK ES FR GB

EPO simple patent family

WO 9743454 A1 19971120; AU 2458497 A 19971205; CA 2254081 A1 19971120; EP 0941371 A1 19990915; EP 0941371 A4 20001004; US 5759283 A 19980602

INPADOC legal status


2004-04-07 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031003

2003-09-03 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: TATE & LYLE SUGAR HOLDINGS, INC.

2003-07-09 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030523

2000-10-04 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000821

2000-10-04 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT DE DK ES FR GB

2000-09-20 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 13D 3/06 A, 7C 13D 3/16 B

1999-09-15 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981209

1999-09-15 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE DK ES FR GB

1999-09-15 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: SI PAYMENT 19981209